SourceTree should not remember my passwords

I am using SourceTree to push and pull over HTTPS on a development machine. The machine is shared with a couple of developers, often working under the same account for practical reasons. Can I tell SourceTree to forget my password after closing the SourceTree session?

I can find a few questions on this site asking for the opposite, that SourceTree would save their passwords, I think it would be handy to explicitly tell SourceTree whether or not it is allowed to save this info.